package com.atguigu.gulimall.cart.controller;

import com.atguigu.gulimall.cart.service.CartService;
import com.atguigu.gulimall.cart.vo.CartItemVo;
import com.atguigu.gulimall.cart.vo.CartVo;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.servlet.mvc.support.RedirectAttributes;

import java.util.List;
import java.util.concurrent.ExecutionException;

/**
 * @author jingchun
 * @create 2024-07-20 22:55
 */

@Slf4j
@Controller
public class CartController {

	@Autowired
	CartService cartService;



	@GetMapping(value = "/hello")
	public String hello(){
		return "hello";
	}

	/**
	 * 获取当前用户的购物车商品项
	 * @return
	 */
	@GetMapping(value = "/currentUserCartItems")
	@ResponseBody
	public List<CartItemVo> getCurrentCartItems() {

		List<CartItemVo> cartItemVoList = cartService.getUserCartItems();

		return cartItemVoList;
	}

	/**
	 * 去购物车页面的请求
	 * 浏览器有一个cookie:user-key 标识用户的身份，一个月过期
	 * 如果第一次使用jd的购物车功能，都会给一个临时的用户身份:
	 * 浏览器以后保存，每次访问都会带上这个cookie；
	 *
	 * 登录：session有
	 * 没登录：按照cookie里面带来user-key来做
	 * 第一次，如果没有临时用户，自动创建一个临时用户
	 *
	 * @return
	 */
	@GetMapping(value = "/cart.html")
	public String cartListPage(Model model) throws ExecutionException, InterruptedException {
		//快速得到用户信息：id,user-key
		// UserInfoTo userInfoTo = CartInterceptor.toThreadLocal.get();

		CartVo cartVo = cartService.getCart();
		model.addAttribute("cart",cartVo);
		return "cartList1";
	}

	/**
	 * 添加商品到购物车
	 * attributes.addFlashAttribute():将数据放在session中，可以在页面中取出，但是只能取一次
	 * attributes.addAttribute():将数据放在url后面
	 * @return
	 */
	@GetMapping(value = "/addCartItem")
	public String addCartItem(@RequestParam("skuId") Long skuId,
	                          @RequestParam("num") Integer num,
	                          RedirectAttributes attributes) throws ExecutionException, InterruptedException {

		cartService.addToCart(skuId,num);

		attributes.addAttribute("skuId",skuId);
		return "redirect:http://cart.gulimall.com/addToCartSuccessPage.html";
	}

	/**
	 * 跳转到添加购物车成功页面
	 * @param skuId
	 * @param model
	 * @return
	 */
	@GetMapping(value = "/addToCartSuccessPage.html")
	public String addToCartSuccessPage(@RequestParam("skuId") Long skuId,
	                                   Model model) {
		//重定向到成功页面。再次查询购物车数据即可
		CartItemVo cartItemVo = cartService.getCartItem(skuId);
		model.addAttribute("cartItem",cartItemVo);
		return "success";
	}

	/**
	 * 商品是否选中
	 * @param skuId
	 * @param checked
	 * @return
	 */
	@GetMapping(value = "/checkItem")
	public String checkItem(@RequestParam(value = "skuId") Long skuId,
	                        @RequestParam(value = "checked") Integer checked) {

		cartService.checkItem(skuId,checked);

		return "redirect:http://cart.gulimall.com/cart.html";

	}

	/**
	 * 改变商品数量
	 * @param skuId
	 * @param num
	 * @return
	 */
	@GetMapping(value = "/countItem")
	public String countItem(@RequestParam(value = "skuId") Long skuId,
	                        @RequestParam(value = "num") Integer num) {

		cartService.changeItemCount(skuId,num);

		return "redirect:http://cart.gulimall.com/cart.html";
	}

	/**
	 * 删除商品信息
	 * @param skuId
	 * @return
	 */
	@GetMapping(value = "/deleteItem")
	public String deleteItem(@RequestParam("skuId") Integer skuId) {

		cartService.deleteIdCartInfo(skuId);

		return "redirect:http://cart.gulimall.com/cart.html";

	}

}
